Bench lathe



Aug. 1, 1939. F. o. HOAGLAND BENCH LATHE 2 Sheets-Sheet 1 Filed June 16, 1938 INVENTOR E0 Hoa y/9a ATTORNEY Aug. 1, 1939. F. o. HOAGLAND BENCH LATHE 2 SheetS-Sheet 2 Filed June 16, 1938 INVENTOR f0: #05

ATTORNEY Patented Aug. 1, 1939 UNITED STATES PATENT OFFHCE BENCH LATHE Application June 16, 1938, Serial No. 213,977

5 Claims.

This invention relates to lathes and particularly to an improved form of bench lathe having a slidable tool supporting bed thereon.

An object of the invention is to provide a bench type lathe with a slidably mounted bed in which is adjustably mounted a tool rest and tailstock, the bed being slidable longitudinally upon the base of the bench lathe in a direction toward and from the work supporting and rotating end.

Another object of the invention is to provide simple but improved means to clamp the tool rest adjustably along the upper surface of the bed with the bed in any longitudinal position on the base.

5- With the above and other objects in View, my

invention may include the features of construction and operation set forth in the following specification and illustrated in the accompanying drawings.

In the accompanying drawings annexed hereto and forming a part of this specification, I have shown the invention embodied in a standard form of bench type lathe but it will be understood that the invention can be otherwise em- 25 bodied and that the drawings are not to be construed as defining or limiting the scope of the invention, the claims appended to this specification being relied upon for that purpose.

In the drawings:

3 Figure 1 is a front elevation of a complete bench lathe having the invention applied thereto, parts being shown in section to more clearly indicate their construction.

Fig. 2 is a side elevation of the complete bench 35 lathe taken from the right hand end of Fig. 1.

Fig. 3 is a detail View of the tool rest clamping means, and

Fig. 4 is a cross sectional view taken on the line 4-4 of Fig. 3.

40 In the above mentioned drawings there has been shown but one embodiment of the invention which is now deemed preferable, but it is to be understood that changes and modifications may be made within the scope of the appended claims 45 without departing from the spirit of the invention.

Briefly and in its preferred aspect, the invention may include the following principal parts: First, an elongated base having a headstock mounted at one end thereof; second, work supporting and rotating means mounted within the headstock; third, a bed slidably mounted upon the base for movement in a direction toward and from the headstock and adapted to be clamped in 55 any adjusted position on the base; fourth, a tailstock adjustably mounted upon the upper surface of the bed; fifth, a tool rest adjustably mounted upon the upper surface of the bed, there being a T-bolt mounted within the bed and engaging a transversely extending slot within the tool rest; and sixth, an oscillating shaft extending longitudinally and centrally within the bed and engaging the T-bolt so that oscillation of the shaft will clamp and unclamp the tool rest.

Referring more in detail to the figures of the drawings, the bench lathe comprises a base if) having suitable longitudinally extending ways ll upon its upper surface and at one end there may be mounted thereon a headstock l2. Within the headstock I2 is a rotating work supporting spindle [3 having a face plate, chuck or other member l4 upon one end and adapted to be rotated at varying speeds in any usual manner.

Slidable along the ways it in the base I0 is a bed I 5 having longitudinally extending ways I6 upon its upper surface. This bed l5 may be clamped in adjustable positions upon the base ll! by means of clamping bolts l'i indicated in Figs. 1 and 2. These bolts ll have heads on their lower ends engaging within a T-slot extending longitudinally along the base It]. Cross shafts 3 having an eccentric surface thereon engaging the bolts ll enable the bed I5 to be clamped and unclamped in any position by oscillating the cross shafts l8. Upon the ways I 5 on the upper surface of this bed I5 is a tailstock I 9, the spindle 20 of which is alined with the axis of the work supporting and rotating spindle l3.

A tool rest 2i preferably including a transversely movable slide 22 and a second slide 23 mounted thereon movable at any angle thereto is provided, the upper slide 23 having a tool supporting member 24. The tool rest 2| has its base member slidably engaging the upper guideways N5 of the bed l5 and is provided with a T- slot extending transversely relative to the ways I6 upon the bed [5. Engaging this T-slot and extending within a recess within the bed is a T-bolt 25. The head 26 of this bolt engages within the T-slot within the tool rest 2! so that when clamped the tool rest 2| may be retained in any desired transverse position.

In order to clamp the tool rest 2! in adjusted positions on the bed l5 the T-bolt 25 is provided with a transverse hole 21 extending horizontally therethrough. Through this hole 21 passes a shaft 28 extending the entire length of the bed l5 having at its tailstock end an arm 29 by means of which it may be oscillated. The shaft 28 is non-circular in cross section throughout the length engaged by the T-bolt as shown in Fig. 4 so that in one position the shaft 28 forces the T-bolt 25 downward to rigidly secure the tool rest 2| upon the bed l5. In its other oscillated position the shaft 28 permits slidable movement of the tool rest 2| along the ways l5. As shown in Figs. 1 and 3, the T-bolt 25 passes through a vertical hole within a block 30 engaging the under surface of the recess within the bed l5 and also serving as bearings for the shaft 28 adjacent and on opposite sides of the T-bolt 25. This block or slide 30, by reason of its engagement with the T-bolt 25, will be movable within the bed !5 whenever the tool rest 2| is moved along the Ways l6. To force the T-bolt 25 upward when unclamped by the shaft 28 a light spring 3| fastened at one end to the block or slide 30 may bear against the lower end of the bolt.

I claim as my invention:

1. A bench type lathe comprising in combination, a base having a headstock at one end, a Work supporting and rotating spindle in said headstock, a bed slidable longitudinally on said base, a tool rest adjustable on said bed and having tool supporting and moving means therein, means to lock said bed in adjusted positions on said base, a shaft extending longitudinally within said. bed and having a non-circular cross section extending asubstantial distance along its length, and means depending from said tool rest engaging said shaft along its non-circular cross section whereby oscillation of said shaft in opposite directions will clamp and unclamp said tool rest relative to said bed.

2. A bench type lathe comprising in combination, a base having a headstock at one end, a work supporting and rotating spindle in said headstock, a bed slidable longitudinally on said base, a tool rest adjustable transversely on said bed and having tool supporting and moving means therein, means to lock said bed in adjusted positions on said base, a shaft extending longitudinally within said bed and having a noncircular cross section, means to rotatably mount said shaft within said bed and retain said shaft against endwise movement, and a T-bolt depending from said tool rest engaging said shaft whereby oscillation of said shaft in opposite directions will clamp and unclamp said tool rest relative to said bed.

3. A bench type lathe comprising in combination, a base having aheadstock at one end, a Work supporting and rotating spindle in said headstock, a bed slidable longitudinally on said base, a tool rest transversely adjustable on said bed and having tool supporting and moving means therein, means to lock said bed in adjusted longitudinal positions on said base, a shaft extending longitudinally within said bed and having a noncircular cross section, means to rotatably mount said shaft Within said bed and retain said shaft against endwise movement, a sleeve slidable with said tool rest through which said shaft extends, and means depending from said tool rest and extending through said sleeve whereby oscillation of said shaft in opposite directions will clamp and unclamp said tool rest relative to said bed.

4. A bench type lathe comprising in combination, a base having a headstock at one end, a work supporting and rotating spindle in said headstock, a bed slidable longitudinally on said base, a tool rest adjustable on said bed and having tool supporting and moving means therein, means to lock said bed in adjusted positions on said base, a shaft extending longitudinally Within said bed and having a, non-circular cross section, means to rotatably mount said shaft within said head and retain said shaft against endwise movement, a T-bolt engaging a slot in said tool rest and depending from said tool rest, said bolt engaging said shaft whereby oscillation of said shaft in opposite directions will clamp and unclamp said tool rest relative to said bed, and a sleeve slidable with said tool'rest through which said shaft and T-bo-lt extend.

5. A bench type lathe comprising in combination, abase having a headstock at one end, a work supporting and rotating spindle in said headstock, a bed slidable longitudinally on said base and provided with a longitudinally extending slot on its upper surface, a tool rest adjust able. on said bed and having tool supporting and moving means therein, means to lock said bed in adjusted positions on said base, a shaft extending longitudinally within said bed having a non-circular cross section, a sleeve movable with said tool rest and through which said shaft extends, and a T-bolt depending from said tool rest through said slot and engaging said shaft within an opening provided within said sleeve whereby oscillation of said shaft in opposite directions will clamp and uncl'amp said tool rest relative to said bed.

FRANK 0t HOAGLAND: 

